Escondida's operator, BHP Billiton, is the largest diversified natural resources company in the world

The ownership structure of Minera Escondida is as follows:

BHP Billiton is the world’s largest natural resources Company, with Head Offices in Australia. It is organized as nine divisions: petroleum, aluminium, base metals, metallurgical coal, iron ore, manganese, diamonds and specialized products, energy coal, and stainless steel materials, which together total around one hundred operations, in addition to the corporate offices on each continent. One of these divisions, Base Metals, has its offices in Chile. BHP Billiton is the major shareholder and operator of Escondida since prior to the commencement of operations. www.bhpbilliton.com

Rio Tinto is a Company of British origin and is also one of the largest natural resources Company in the world. It consists of eight divisions: iron ore, energy, industrial minerals, aluminium, copper, diamonds, technology, and exploration. Rio Tinto is involved in around sixty operations in various countries. www.riotinto.com

JECO Corporation is a Japanese consortium formed by the Mitsubishi Corporation (70%), Mitsubishi Materials (10%), and Nippon Mining & Metals Company (20%). www.mitsubishi.com

International Finance Corporation (IFC) is an entity belonging to the World Bank that encourages sustainable development in the private sector in developing countries, in order to help fight poverty and improve the quality of life of the population. www.ifc.org